1. skimage.util
crop
pad
random_noise
regular_grid
view_as_windows
view_as_blcks
2. skimage.transform
img = np.array(img, dtype=float)
resize(img, [], order=1) 0-nearest 1-bilinear 3-cublinear
rescale(img, 0.5)
rotate()
warp()
3. skimage.color
4. skimage.draw
polygon()
-------------------------------reference------------
1. http://programtalk.com/python-examples/skimage.transform.warp/
2. http://www.cnblogs.com/denny402/p/5160955.html